7159213021 has 2 divisors, whose sum is σ = 7159213022. Its totient is φ = 7159213020.

The previous prime is 7159212959. The next prime is 7159213037. The reversal of 7159213021 is 1203129517.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4712822500 + 2446390521 = 68650^2 + 49461^2 .

It is a cyclic number.

It is not a de Polignac number, because 7159213021 - 2¹¹ = 7159210973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7159219021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3579606510 + 3579606511.

It is an arithmetic number, because the mean of its divisors is an integer number (3579606511).

Almost surely, 2^7159213021 is an apocalyptic number.

It is an amenable number.

7159213021 is a deficient number, since it is larger than the sum of its proper divisors (1).

7159213021 is an equidigital number, since it uses as much as digits as its factorization.

7159213021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 7159213021 is about 84612.1328238451. The cubic root of 7159213021 is about 1927.3256220144.

The spelling of 7159213021 in words is "seven billion, one hundred fifty-nine million, two hundred thirteen thousand, twenty-one".